import ast import base64 import copy import functools import io import json import re from datetime import datetime from pathlib import Path import yaml from PIL import Image import modules.shared as shared from modules.extensions import apply_extensions from modules.html_generator import chat_html_wrapper, make_thumbnail from modules.logging_colors import logger from modules.text_generation import (generate_reply, get_encoded_length, get_max_prompt_length) from modules.utils import replace_all def get_turn_substrings(state, instruct=False): if instruct: if 'turn_template' not in state or state['turn_template'] == '': template = '<|user|>\n<|user-message|>\n<|bot|>\n<|bot-message|>\n' else: template = state['turn_template'].replace(r'\n', '\n') else: template = '<|user|>: <|user-message|>\n<|bot|>: <|bot-message|>\n' replacements = { '<|user|>': state['name1_instruct' if instruct else 'name1'].strip(), '<|bot|>': state['name2_instruct' if instruct else 'name2'].strip(), } output = { 'user_turn': template.split('<|bot|>')[0], 'bot_turn': '<|bot|>' + template.split('<|bot|>')[1], 'user_turn_stripped': template.split('<|bot|>')[0].split('<|user-message|>')[0], 'bot_turn_stripped': '<|bot|>' + template.split('<|bot|>')[1].split('<|bot-message|>')[0], } for k in output: output[k] = replace_all(output[k], replacements) return output def generate_chat_prompt(user_input, state, **kwargs): impersonate = kwargs.get('impersonate', False) _continue = kwargs.get('_continue', False) also_return_rows = kwargs.get('also_return_rows', False) history = kwargs.get('history', shared.history)['internal'] is_instruct = state['mode'] == 'instruct' # Find the maximum prompt size max_length = min(get_max_prompt_length(state), state['chat_prompt_size']) all_substrings = { 'chat': get_turn_substrings(state, instruct=False), 'instruct': get_turn_substrings(state, instruct=True) } substrings = all_substrings['instruct' if is_instruct else 'chat'] # Create the template for "chat-instruct" mode if state['mode'] == 'chat-instruct': wrapper = '' command = state['chat-instruct_command'].replace('<|character|>', state['name2'] if not impersonate else state['name1']) wrapper += state['context_instruct'] wrapper += all_substrings['instruct']['user_turn'].replace('<|user-message|>', command) wrapper += all_substrings['instruct']['bot_turn_stripped'] if impersonate: wrapper += substrings['user_turn_stripped'].rstrip(' ') elif _continue: wrapper += apply_extensions("bot_prefix", substrings['bot_turn_stripped']) wrapper += history[-1][1] else: wrapper += apply_extensions("bot_prefix", substrings['bot_turn_stripped'].rstrip(' ')) else: wrapper = '<|prompt|>' # Build the prompt min_rows = 3 i = len(history) - 1 rows = [state['context_instruct'] if is_instruct else f"{state['context'].strip()}\n"] while i >= 0 and get_encoded_length(wrapper.replace('<|prompt|>', ''.join(rows))) < max_length: if _continue and i == len(history) - 1: if state['mode'] != 'chat-instruct': rows.insert(1, substrings['bot_turn_stripped'] + history[i][1].strip()) else: rows.insert(1, substrings['bot_turn'].replace('<|bot-message|>', history[i][1].strip())) string = history[i][0] if string not in ['', '<|BEGIN-VISIBLE-CHAT|>']: rows.insert(1, replace_all(substrings['user_turn'], {'<|user-message|>': string.strip(), '<|round|>': str(i)})) i -= 1 if impersonate: if state['mode'] == 'chat-instruct': min_rows = 1 else: min_rows = 2 rows.append(substrings['user_turn_stripped'].rstrip(' ')) elif not _continue: # Add the user message if len(user_input) > 0: rows.append(replace_all(substrings['user_turn'], {'<|user-message|>': user_input.strip(), '<|round|>': str(len(history))})) # Add the character prefix if state['mode'] != 'chat-instruct': rows.append(apply_extensions("bot_prefix", substrings['bot_turn_stripped'].rstrip(' '))) while len(rows) > min_rows and get_encoded_length(wrapper.replace('<|prompt|>', ''.join(rows))) >= max_length: rows.pop(1) prompt = wrapper.replace('<|prompt|>', ''.join(rows)) if also_return_rows: return prompt, rows else: return prompt def get_stopping_strings(state): stopping_strings = [] if state['mode'] in ['instruct', 'chat-instruct']: stopping_strings += [ state['turn_template'].split('<|user-message|>')[1].split('<|bot|>')[0] + '<|bot|>', state['turn_template'].split('<|bot-message|>')[1] + '<|user|>' ] replacements = { '<|user|>': state['name1_instruct'], '<|bot|>': state['name2_instruct'] } for i in range(len(stopping_strings)): stopping_strings[i] = replace_all(stopping_strings[i], replacements).rstrip(' ').replace(r'\n', '\n') if state['mode'] in ['chat', 'chat-instruct']: stopping_strings += [ f"\n{state['name1']}:", f"\n{state['name2']}:" ] stopping_strings += ast.literal_eval(f"[{state['custom_stopping_strings']}]") return stopping_strings def extract_message_from_reply(reply, state): next_character_found = False stopping_strings = get_stopping_strings(state) if state['stop_at_newline']: lines = reply.split('\n') reply = lines[0].strip() if len(lines) > 1: next_character_found = True else: for string in stopping_strings: idx = reply.find(string) if idx != -1: reply = reply[:idx] next_character_found = True # If something like "\nYo" is generated just before "\nYou:" # is completed, trim it if not next_character_found: for string in stopping_strings: for j in range(len(string) - 1, 0, -1): if reply[-j:] == string[:j]: reply = reply[:-j] break else: continue break return reply, next_character_found def chatbot_wrapper(text, history, state, regenerate=False, _continue=False, loading_message=True): output = copy.deepcopy(history) output = apply_extensions('history', output) if shared.model_name == 'None' or shared.model is None: logger.error("No model is loaded! Select one in the Model tab.") yield output return # Defining some variables just_started = True visible_text = None eos_token = '\n' if state['stop_at_newline'] else None stopping_strings = get_stopping_strings(state) # Preparing the input if not any((regenerate, _continue)): text, visible_text = apply_extensions('input_hijack', text, visible_text) if visible_text is None: visible_text = text text = apply_extensions('input', text) # *Is typing...* if loading_message: yield {'visible': output['visible'] + [[visible_text, shared.processing_message]], 'internal': output['internal']} else: text, visible_text = output['internal'][-1][0], output['visible'][-1][0] if regenerate: output['visible'].pop() output['internal'].pop() # *Is typing...* if loading_message: yield {'visible': output['visible'] + [[visible_text, shared.processing_message]], 'internal': output['internal']} elif _continue: last_reply = [output['internal'][-1][1], output['visible'][-1][1]] if loading_message: yield {'visible': output['visible'][:-1] + [[visible_text, last_reply[1] + '...']], 'internal': output['internal']} # Generating the prompt kwargs = { '_continue': _continue, 'history': output, } prompt = apply_extensions('custom_generate_chat_prompt', text, state, **kwargs) if prompt is None: prompt = generate_chat_prompt(text, state, **kwargs) # Generate cumulative_reply = '' for i in range(state['chat_generation_attempts']): reply = None for j, reply in enumerate(generate_reply(prompt + cumulative_reply, state, eos_token=eos_token, stopping_strings=stopping_strings, is_chat=True)): reply = cumulative_reply + reply # Extract the reply reply, next_character_found = extract_message_from_reply(reply, state) visible_reply = re.sub("(||{{user}})", state['name1'], reply) visible_reply = apply_extensions("output", visible_reply) # We need this global variable to handle the Stop event, # otherwise gradio gets confused if shared.stop_everything: yield output return if just_started: just_started = False if not _continue: output['internal'].append(['', '']) output['visible'].append(['', '']) if _continue: output['internal'][-1] = [text, last_reply[0] + reply] output['visible'][-1] = [visible_text, last_reply[1] + visible_reply] if state['stream']: yield output elif not (j == 0 and visible_reply.strip() == ''): output['internal'][-1] = [text, reply.lstrip(' ')] output['visible'][-1] = [visible_text, visible_reply.lstrip(' ')] if state['stream']: yield output if next_character_found: break if reply in [None, cumulative_reply]: break else: cumulative_reply = reply yield output def impersonate_wrapper(text, start_with, state): if shared.model_name == 'None' or shared.model is None: logger.error("No model is loaded! Select one in the Model tab.") yield '' return # Defining some variables cumulative_reply = '' eos_token = '\n' if state['stop_at_newline'] else None prompt = generate_chat_prompt('', state, impersonate=True) stopping_strings = get_stopping_strings(state) yield text + '...' cumulative_reply = text for i in range(state['chat_generation_attempts']): reply = None for reply in generate_reply(prompt + cumulative_reply, state, eos_token=eos_token, stopping_strings=stopping_strings, is_chat=True): reply = cumulative_reply + reply reply, next_character_found = extract_message_from_reply(reply, state) yield reply.lstrip(' ') if shared.stop_everything: return if next_character_found: break if reply in [None, cumulative_reply]: break else: cumulative_reply = reply yield cumulative_reply.lstrip(' ') def generate_chat_reply(text, history, state, regenerate=False, _continue=False, loading_message=True): if regenerate or _continue: text = '' if (len(history['visible']) == 1 and not history['visible'][0][0]) or len(history['internal']) == 0: yield history return for history in chatbot_wrapper(text, history, state, regenerate=regenerate, _continue=_continue, loading_message=loading_message): yield history # Same as above but returns HTML for the UI def generate_chat_reply_wrapper(text, start_with, state, regenerate=False, _continue=False): if start_with != '' and _continue == False: if regenerate == True: text = remove_last_message() regenerate = False _continue = True send_dummy_message(text) send_dummy_reply(start_with) for i, history in enumerate(generate_chat_reply(text, shared.history, state, regenerate, _continue, loading_message=True)): if i != 0: shared.history = copy.deepcopy(history) yield chat_html_wrapper(history['visible'], state['name1'], state['name2'], state['mode'], state['chat_style']) def remove_last_message(): if len(shared.history['visible']) > 0 and shared.history['internal'][-1][0] != '<|BEGIN-VISIBLE-CHAT|>': last = shared.history['visible'].pop() shared.history['internal'].pop() else: last = ['', ''] return last[0] def send_last_reply_to_input(): if len(shared.history['internal']) > 0: return shared.history['internal'][-1][1] else: return '' def replace_last_reply(text): if len(shared.history['visible']) > 0: shared.history['visible'][-1][1] = text shared.history['internal'][-1][1] = apply_extensions("input", text) def send_dummy_message(text): shared.history['visible'].append([text, '']) shared.history['internal'].append([apply_extensions("input", text), '']) def send_dummy_reply(text): if len(shared.history['visible']) > 0 and not shared.history['visible'][-1][1] == '': shared.history['visible'].append(['', '']) shared.history['internal'].append(['', '']) shared.history['visible'][-1][1] = text shared.history['internal'][-1][1] = apply_extensions("input", text) def clear_chat_log(greeting, mode): shared.history['visible'] = [] shared.history['internal'] = [] if mode != 'instruct': if greeting != '': shared.history['internal'] += [['<|BEGIN-VISIBLE-CHAT|>', greeting]] shared.history['visible'] += [['', apply_extensions("output", greeting)]] save_history(mode) def redraw_html(name1, name2, mode, style, reset_cache=False): return chat_html_wrapper(shared.history['visible'], name1, name2, mode, style, reset_cache=reset_cache) def tokenize_dialogue(dialogue, name1, name2): history = [] messages = [] dialogue = re.sub('', '', dialogue) dialogue = re.sub('', '', dialogue) dialogue = re.sub('(\n|^)[Aa]non:', '\\1You:', dialogue) dialogue = re.sub('(\n|^)\[CHARACTER\]:', f'\\g<1>{name2}:', dialogue) idx = [m.start() for m in re.finditer(f"(^|\n)({re.escape(name1)}|{re.escape(name2)}):", dialogue)] if len(idx) == 0: return history for i in range(len(idx) - 1): messages.append(dialogue[idx[i]:idx[i + 1]].strip()) messages.append(dialogue[idx[-1]:].strip()) entry = ['', ''] for i in messages: if i.startswith(f'{name1}:'): entry[0] = i[len(f'{name1}:'):].strip() elif i.startswith(f'{name2}:'): entry[1] = i[len(f'{name2}:'):].strip() if not (len(entry[0]) == 0 and len(entry[1]) == 0): history.append(entry) entry = ['', ''] print("\033[1;32;1m\nDialogue tokenized to:\033[0;37;0m\n", end='') for row in history: for column in row: print("\n") for line in column.strip().split('\n'): print("| " + line + "\n") print("|\n") print("------------------------------") return history def save_history(mode, timestamp=False): # Instruct mode histories should not be saved as if # Alpaca or Vicuna were characters if mode == 'instruct': if not timestamp: return fname = f"Instruct_{datetime.now().strftime('%Y%m%d-%H%M%S')}.json" else: if shared.character == 'None': return if timestamp: fname = f"{shared.character}_{datetime.now().strftime('%Y%m%d-%H%M%S')}.json" else: fname = f"{shared.character}_persistent.json" if not Path('logs').exists(): Path('logs').mkdir() with open(Path(f'logs/{fname}'), 'w', encoding='utf-8') as f: f.write(json.dumps({'data': shared.history['internal'], 'data_visible': shared.history['visible']}, indent=2)) return Path(f'logs/{fname}') def load_history(file, name1, name2): file = file.decode('utf-8') try: j = json.loads(file) if 'data' in j: shared.history['internal'] = j['data'] if 'data_visible' in j: shared.history['visible'] = j['data_visible'] else: shared.history['visible'] = copy.deepcopy(shared.history['internal']) except: shared.history['internal'] = tokenize_dialogue(file, name1, name2) shared.history['visible'] = copy.deepcopy(shared.history['internal']) def replace_character_names(text, name1, name2): text = text.replace('{{user}}', name1).replace('{{char}}', name2) return text.replace('', name1).replace('', name2) def build_pygmalion_style_context(data): context = "" if 'char_persona' in data and data['char_persona'] != '': context += f"{data['char_name']}'s Persona: {data['char_persona']}\n" if 'world_scenario' in data and data['world_scenario'] != '': context += f"Scenario: {data['world_scenario']}\n" context = f"{context.strip()}\n\n" return context def generate_pfp_cache(character): cache_folder = Path("cache") if not cache_folder.exists(): cache_folder.mkdir() for path in [Path(f"characters/{character}.{extension}") for extension in ['png', 'jpg', 'jpeg']]: if path.exists(): img = make_thumbnail(Image.open(path)) img.save(Path('cache/pfp_character.png'), format='PNG') return img return None def load_character(character, name1, name2, instruct=False): shared.character = character context = greeting = turn_template = "" greeting_field = 'greeting' picture = None # Deleting the profile picture cache, if any if Path("cache/pfp_character.png").exists(): Path("cache/pfp_character.png").unlink() if character != 'None': folder = 'characters' if not instruct else 'characters/instruction-following' picture = generate_pfp_cache(character) for extension in ["yml", "yaml", "json"]: filepath = Path(f'{folder}/{character}.{extension}') if filepath.exists(): break file_contents = open(filepath, 'r', encoding='utf-8').read() data = json.loads(file_contents) if extension == "json" else yaml.safe_load(file_contents) # Finding the bot's name for k in ['name', 'bot', '<|bot|>', 'char_name']: if k in data and data[k] != '': name2 = data[k] break # Find the user name (if any) for k in ['your_name', 'user', '<|user|>']: if k in data and data[k] != '': name1 = data[k] break for field in ['context', 'greeting', 'example_dialogue', 'char_persona', 'char_greeting', 'world_scenario']: if field in data: data[field] = replace_character_names(data[field], name1, name2) if 'context' in data: context = data['context'] if not instruct: context = context.strip() + '\n' elif "char_persona" in data: context = build_pygmalion_style_context(data) greeting_field = 'char_greeting' if 'example_dialogue' in data: context += f"{data['example_dialogue'].strip()}\n" if greeting_field in data: greeting = data[greeting_field] if 'turn_template' in data: turn_template = data['turn_template'] else: context = shared.settings['context'] name2 = shared.settings['name2'] greeting = shared.settings['greeting'] turn_template = shared.settings['turn_template'] if not instruct: shared.history['internal'] = [] shared.history['visible'] = [] if shared.character != 'None' and Path(f'logs/{shared.character}_persistent.json').exists(): load_history(open(Path(f'logs/{shared.character}_persistent.json'), 'rb').read(), name1, name2) else: # Insert greeting if it exists if greeting != "": shared.history['internal'] += [['<|BEGIN-VISIBLE-CHAT|>', greeting]] shared.history['visible'] += [['', apply_extensions("output", greeting)]] # Create .json log files since they don't already exist save_history('instruct' if instruct else 'chat') return name1, name2, picture, greeting, context, repr(turn_template)[1:-1] @functools.cache def load_character_memoized(character, name1, name2, instruct=False): return load_character(character, name1, name2, instruct=instruct) def upload_character(json_file, img, tavern=False): json_file = json_file if type(json_file) == str else json_file.decode('utf-8') data = json.loads(json_file) outfile_name = data["char_name"] i = 1 while Path(f'characters/{outfile_name}.json').exists(): outfile_name = f'{data["char_name"]}_{i:03d}' i += 1 if tavern: outfile_name = f'TavernAI-{outfile_name}' with open(Path(f'characters/{outfile_name}.json'), 'w', encoding='utf-8') as f: f.write(json_file) if img is not None: img = Image.open(io.BytesIO(img)) img.save(Path(f'characters/{outfile_name}.png')) logger.info(f'New character saved to "characters/{outfile_name}.json".') return outfile_name def upload_tavern_character(img, name1, name2): _img = Image.open(io.BytesIO(img)) _img.getexif() decoded_string = base64.b64decode(_img.info['chara']) _json = json.loads(decoded_string) _json = {"char_name": _json['name'], "char_persona": _json['description'], "char_greeting": _json["first_mes"], "example_dialogue": _json['mes_example'], "world_scenario": _json['scenario']} return upload_character(json.dumps(_json), img, tavern=True) def upload_your_profile_picture(img): cache_folder = Path("cache") if not cache_folder.exists(): cache_folder.mkdir() if img is None: if Path("cache/pfp_me.png").exists(): Path("cache/pfp_me.png").unlink() else: img = make_thumbnail(img) img.save(Path('cache/pfp_me.png')) logger.info('Profile picture saved to "cache/pfp_me.png"') def delete_file(path): if path.exists(): logger.warning(f'Deleting {path}') path.unlink(missing_ok=True) def save_character(name, greeting, context, picture, filename, instruct=False): if filename == "": logger.error("The filename is empty, so the character will not be saved.") return folder = 'characters' if not instruct else 'characters/instruction-following' data = { 'name': name, 'greeting': greeting, 'context': context, } data = {k: v for k, v in data.items() if v} # Strip falsy filepath = Path(f'{folder}/{filename}.yaml') with filepath.open('w') as f: yaml.dump(data, f, sort_keys=False) logger.info(f'Wrote {filepath}') path_to_img = Path(f'{folder}/{filename}.png') if picture and not instruct: picture.save(path_to_img) logger.info(f'Wrote {path_to_img}') elif path_to_img.exists(): delete_file(path_to_img) def delete_character(name, instruct=False): folder = 'characters' if not instruct else 'characters/instruction-following' for extension in ["yml", "yaml", "json"]: delete_file(Path(f'{folder}/{name}.{extension}')) delete_file(Path(f'{folder}/{name}.png'))